<run>
  <precisionModel scale="1.0" offsetx="0.0" offsety="0.0"/>

<case>
  <desc>AC A-shells overlapping B-shell at A-vertex</desc>
  <a>
    POLYGON(
      (100 60, 140 100, 100 140, 60 100, 100 60))
  </a>
  <b>
    MULTIPOLYGON(
      (
        (80 40, 120 40, 120 80, 80 80, 80 40)), 
      (
        (120 80, 160 80, 160 120, 120 120, 120 80)), 
      (
        (80 120, 120 120, 120 160, 80 160, 80 120)), 
      (
        (40 80, 80 80, 80 120, 40 120, 40 80)))
  </b>
<test>
  <op name="relate" arg3="21210F212" arg1="A" arg2="B">
    true
  </op>
</test>
</case>

</run>
